JP4678863B2 - Flexible joint for connection between terminals - Google Patents

Description

  For example, a circuit breaker and a disconnecting switch in a substation are connected to each other between connecting terminals by connecting wires each having a feather-shaped terminal at both ends. The present invention is interposed between the terminal of such a connection line and the terminal connection part of the device. When two devices swing away from each other due to an earthquake or the like, the connection wire is pulled. The present invention relates to a flexible joint for preventing the device from being damaged.

As this type of conventional flexible joint, one described in Patent Document 1 is known. The flexible joint is shown in FIG. The flexible joint 21 is interposed between a conductor B1 of one device and a terminal W1 of a connection line W that connects between the conductor B1 of another device (not shown) that is separated from the conductor B1. The flexible joint 21 is a first connection body 22 fixed to the conductor B1 and a second connection body fixed to the terminal W1 of the connection line and connected to the first connection body 22 so as to be relatively displaceable. 23, a spring member 25 that gives a predetermined resistance to the relative displacement between the first connection body 22 and the second connection body 23, and a sufficient space between the first connection body 22 and the second connection body 23. And a flexible conductor 26 that is electrically connected while maintaining a sufficient margin. The first connection body 22 includes a substrate 22a fixed to the conductor B1. The second connection body 23 includes a substrate 23a fixed to the terminal W1. The substrate 22a of the first connection body and the substrate 23a of the second connection body are arranged so as to overlap each other with a space therebetween, and are linearly guided in one direction and combined so as to be capable of relative displacement. The flexible conductor 26 is bent so as to be able to bend and stretch, and electrically connects the first connection body 22 and the second connection body 23. When a large relative displacement greater than or equal to a predetermined value occurs due to an earthquake or the like between the two devices to which the connection line W is connected, the first connection body 22 and the second connection body 23 are opposed against the resistance by the spring member 25. By moving, prevent damage to the equipment.
JP-A-9-199252

In the conventional flexible joint 21, since the displacement between the first connection body 22 and the second connection body 23 once generated is not automatically recovered even when the vibration stops, a recovery work by an operator is required. There is a problem of doing.
Therefore, according to the present invention, when the vibration between the devices stops, the displacement generated between the first connection body and the second connection body is automatically recovered, and the structure is simplified without requiring a recovery work by an operator. It is an object to provide a flexible joint.

  In order to solve the above-described problem, in the present invention, one end side of the swivel arm 4 is pivotally attached to the first connection body 2 by the first pivot 5 and the other end side is secondly connected by the second pivot 6. Pivot to body 3 A spring 7 is interposed between the swivel arm 4 and the first connection body 2 to hold the swivel arm 4 so that it can be restored to a predetermined swivel angle position with respect to the first connection body 2. The first connection body 2 and the second connection body 3 are electrically connected by a flexible conductor 8 having a sufficient length.

In the flexible joint for inter-terminal connection according to the present invention having the above-described configuration, the first connection body 2 and the second connection body 2 are connected to each other when a large relative displacement greater than or equal to a predetermined value occurs due to an earthquake or the like between the two devices connected to the connection line W. The connection body 3 moves relative to the elastic body 7 while turning the turning arm 4 against the elastic body 7, thereby preventing the equipment from being damaged. When the vibration between the devices stops, the displacement generated between the first connection body 2 and the second connection body 3 is automatically recovered by the elastic body 7, and no recovery work by an operator is required.
Further, the first connecting body 2 is composed of a substrate 9 connected to the conductor B1 and the flexible conductor 8, and a bearing member 10 fixed thereon, and one end side of the swivel arm 4 is connected to the first side. The shaft 5 is pivotally attached to the bearing member 10, the elastic body 7 is constituted by a coiled spring, one end side of the elastic body 7 is locked to the turning arm 4, the intermediate portion is wound around the first pivot shaft 5, and the other end side is a bearing. When it is configured to be locked to the member 10, it is possible to take a large displacement stroke by turning the turning arm 4, and in addition, the rotation force to the original position of the turning arm 4 is performed by the small coiled spring 7. Contributes to downsizing of the device.
Further, when the shield ring 13 is fixed to the substrate 9 of the first connection body 2 via the support arm 12, the corona discharge of the charging unit between the pair of shield rings 13 is effectively prevented. be able to.
Further, the bearing member 10 has a connecting plate portion 10a and a pair of parallel bearing pieces 10b standing on both edges thereof, and the conductor B1 and the flexible conductor 8 are connected to the connecting plate portion 10a. Between the bearing pieces 10b, one end of the swivel arm 4 is pivotally supported by the first pivot 5, and the first stopper pin 11 is installed, and the swivel arm 4 abuts on the first stopper pin 11, thereby In the case where the relative angle between the connection body 3 and the swing arm 4 is determined at all times, a flexible joint having a specific configuration that limits the allowable swing range of the first connection body 2 and the swing arm 4 can be provided. .
Furthermore, the swivel arm 4 is composed of a pair of parallel arm plates 4a, and the second stopper pin 4b protrudes between a position where the first pivot 5 penetrates and a position where the second pivot 6 penetrates, The second connection body 3 has a connection plate portion 3a and an upright piece 3b, the connection line W and the flexible conductor 8 are connected to the connection plate portion 3a, and the swivel arm 4 is connected between the upright pieces 3b. In the case where the relative angle between the second connecting body 3 and the swivel arm 4 is determined by the pivot of the second pivot 6 and the end edge of the upright piece 3b contacting the second stopper pin 4b. Can provide a flexible joint with a specific configuration that limits the swivel allowable range of the swivel arm 4 with respect to the second connector 3.

  Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the flexible joint of the present invention, FIG. 2 is a side view of the flexible joint of the present invention, FIG. 3 is a front view of the flexible joint displaced from the normal state, and FIG. 4 is a front view of the flexible joint showing the relationship with the equipment. FIG.

  In FIG. 4, the conductors D <b> 1 and B <b> 1 that are the terminal connection portions of the disconnector D and the circuit breaker B at two separate positions are connected by a connection line W. The connection line W is provided with connection terminals W1 and W2 in the form of a battledore at both ends. One terminal W2 is fixed to the conductor D1 of the disconnector D with bolts and nuts, and the other terminal W1 is connected to the conductor B1 of the circuit breaker B through the flexible joint 1 according to the present invention.

  As shown in FIGS. 1 to 3, the flexible joint 1 includes a first connection body 2 fixed to the conductor B <b> 1 and a second connection body 3 fixed to the terminal W <b> 1 of the connection line W. The first connection body 2 and the second connection body 3 are connected by a swing arm 4 so as to be capable of relative displacement within a predetermined range. The swivel arm 4 is pivotally attached to the first connector 2 by the first pivot 5 at one end, and is pivotally attached to the second connector 3 by the second pivot 6 at the other end. A spring 7 is interposed between the swing arm 4 and the first connection body 2. By means of the spring 7, the swivel arm 4 is elastically held at a predetermined swivel angle position with respect to the first connection body 2, whereby the second connection body 3 always approaches the first connection body 2. Recoverably held in position. The first connection body 2 and the second connection body 3 are electrically connected by a flexible conductor 8 having a sufficient length.

  The first connection body 2 includes a substrate 9 and a bearing member 10 fixed on the substrate 9. The substrate 9 is fixed on the conductor B1 with one end side of the flexible conductor 8 interposed therebetween. The bearing member 10 includes a connection plate portion 10a that is fixed to the ends of the conductor B1 and the flexible conductor 8, and a pair of parallel bearing pieces 10b that stand up at right angles from opposite ends of the connection plate portion 10a. Have One end portion of the swivel arm 4 is pivotally attached by the first pivot 5 between the bearing pieces 10b. A first stopper pin 11 is installed at a position away from the first pivot 5 on the bearing piece 10b.

  A pair of left and right conductive shield rings 13 in FIG. 2 are fixed to the substrate 9 of the first connection body 2 via a support arm 12. The shield ring 13 is arranged opposite to both end sides of the first pivot 5 so as to sandwich the first connecting body 2, the swivel arm 4, the second connecting body 3 and the flexible conductor 8. Is done. The shield ring 13 has an annular shape and surrounds the movement range of the swing arm 4, the second connection body 3, and the flexible conductor 8, and prevents corona discharge of the charging unit between the pair.

  The turning arm 4 is formed by connecting a pair of parallel arm plates 4a with a second stopper pin 4b and a spring receiving pin 4c. The second stopper pin 4b protrudes from the outer surface of the arm plate 4a at a position near the second pivot 6 between the position through which the first pivot 5 penetrates and the position through which the second pivot 6 penetrates. 2 can be brought into contact with the connection body 3. The spring receiving pin 4c is located between the second stopper pin 4b and the first pivot shaft 5 and is installed between the arm plates 4a.

  The second connection body 3 is erected at a right angle from a connection plate portion 3a to which the connection terminal W1 of the connection line W and the other end of the flexible conductor 8 are fixed, and opposite end edges of the connection plate portion 3a. And a pair of parallel standing upright pieces 3b. The other end of the swivel arm 4 is pivotally attached by the second pivot 6 between the standing pieces 3b. When the end edge of the upright piece 3b abuts on the second stopper pin 4b, one rotation limit of the second connecting body 3 and the turning arm 4 is determined.

  The spring 7 is a string-wound spring, one end of which is engaged with the spring receiving pin 4c of the swivel arm 4, the intermediate portion is wound around the first pivot 5, and the other end is engaged with the spring receiving pin 10c of the bearing member 10. Stopped.

  As shown in FIG. 1, the swing arm 4 is always urged to rotate counterclockwise about the first pivot 5 by the string spring 7 and is in contact with the first stopper pin 11. When the devices B and D shown in FIG. 4 are separated from each other by a predetermined distance or more due to an earthquake or the like, the connection line W becomes tense, but the second connection body 3 is pulled to the right in FIG. 1, as shown in FIG. The swivel arm 4 rotates clockwise against the string spring 7 to prevent a tensile force from reaching the first connection body 2. The rotation of the swivel arm 4 in the clockwise direction is stopped at a position where the stopper portion 4d on one end side contacts the connecting plate portion 10a of the bearing member 10.

  The flexible joint according to the present invention is, for example, interposed between a connection line connecting between a terminal connection part of a circuit breaker and a disconnector in a substation and a terminal connection part of one of the devices, and the two devices are earthquakes, etc. This is used to prevent the device from being damaged by being pulled by the connection line when it is swung away from each other.

It is a front view of the flexible joint of the present invention. It is a side view of the flexible joint of this invention. It is a front view of the flexible joint displaced from the normal state. It is a front view of the flexible joint which shows the relationship with an apparatus. It is a front view of the conventional flexible joint.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flexible joint 2 1st connection body 3 2nd connection body 3a Connection board part 3b Standing piece 4 Turning arm 4a Arm board 4b 2nd stopper pin 4c Spring receiving pin 4d Stopper part 5 1st axis 6 2nd axis Axis 7 Elastic body (spring), (string spring)
8 Flexible conductor 9 Substrate 10 Bearing member 10a Connection plate portion 10b Bearing piece 10c Spring receiving pin 11 First stopper pin 12 Support arm 13 Shield ring
D Disconnector D1 Conductor B Breaker B1 Conductor W Connection line W1 Connection terminal W2 Connection terminal

Claims (4)

A flexible joint interposed between a terminal on the other end side of a connecting line, one end of which is connected to one of two separated conductors, and the other conductor; fixed to the other conductor A first connecting body to be connected ; a connecting plate portion fixed to a terminal of the connecting wire , and a pair of upright pieces parallel to each other at right angles; and with respect to the first connecting body with relative displacement between the conductors second connecting member and for relative displacement between the spaced position and an approximated position; comprising a pair of parallel arms plates, these end portions are respectively pivotally connected to said first connecting member by a first pivot, the other end parts said second pivot arm and is pivotally mounted, respectively by a second pivot to the upright pieces of the connection member; locked to one end of the pivot arm, the other end locked to the first connector by rotating urging the pivot arm relative to the first connector always the Spring and which holds the second connection member to be restored to the approaching position relative to the first connecting member; length to permit the relative displacement to the separation position of the second connecting member to said first connecting body Yes to a; and a flexible conductor for electrically connecting them, said the swivel arm protrudes from the outer surface of the arm plate between the first pivot and said second pivot, said The relative angle between the second connecting body and the swivel arm at the normal approach position of the second connecting body with respect to the first connecting body is determined by abutting the edge of the upright piece of the second connecting body. A flexible joint for connecting terminals, comprising a stopper pin . The first connection body includes a substrate fixed to the other conductor and one end side of the flexible conductor fixed, and a bearing member fixed to the substrate; One end is pivotally attached to the bearing member by the first pivot; the spring is engaged at one end by the pivot arm, the intermediate portion is wound around the first pivot, and the other end is engaged by the bearing member. The flexible joint for inter-terminal connection according to claim 1, wherein the flexible joint is a string-wound spring that is stopped. The bearing member has a connection plate portion to which the other end of the other conductor and the flexible conductor are fixed, and a pair of parallel bearing pieces that stand perpendicularly from opposite end edges of the connection plate portion. One end of the swivel arm is pivotally mounted between the bearing pieces by the first pivot, and another stopper pin other than the stopper pin is installed at a position away from the first pivot; by pivoting arm comes into contact with the stopper pin, the first connection member and the flexible joint for the inter-terminal connection according to claim 2, characterized in that at all times the relative angle between the swivel arm is determined.   The apparatus further includes a pair of conductive shield rings fixed to the substrate of the first connection body via a support arm, the shield ring including the first connection body, the swivel arm, and the second connection body. And a ring that is disposed opposite to both ends of the first pivot so as to sandwich the flexible conductor, and surrounds the range of movement of the swivel arm, the second connector, and the flexible conductor. The flexible joint for inter-terminal connection according to claim 2 or 3, wherein the flexible joint is configured as follows.

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